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NANO modified silicate capillary crystalline material and use method thereof

a technology of silicate capillary crystalline material and nano-modified silicate, which is applied in the field of inorganic concrete durability protection and repair materials, can solve the problems of aging and non-durability in both the protective material per se and the current approach, and the life of concrete contractions has begun to be seriously threatened

Active Publication Date: 2022-02-10
ZHAN YANGDONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method for improving the quality and durability of used concrete. By spraying the concrete with a supporting agent and a nano-modified silicate solution, the method can increase the amount of free calcium ions, which are important for the formation of crystalline structures that make concrete strong and durable. This can improve the surface compactness, waterproofness, and strength of the concrete, leading to better performance and a longer lifespan.

Problems solved by technology

Due to a variety of reasons, the life of concrete contractions has begun to be seriously threatened because of the durability of concrete materials, and prominent problems have begun to appear.
As far as the second aspect concerned, in the field of concrete durability protection material technology, current approaches have serious technical problems of aging and nondurability in both the protective material per se and the combination of the protective material and the concrete.
Therefore, there is no better technology for concrete protection so far.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0053]Preparation of agent A: weigh 0.07 portions of dodecyl trimethyl aminochloride, 0.15 portions of sodium borate, 0.3 portions of sodium thiosulfate, 0.15 portions of ammonium chloride, 0.2 portions of potassium carbonate, 0.15 portions of sodium metaphosphate, 0.15 portions of magnesium fluoride, 0.35 portions of sodium amino alcohol, 60 portions of deionized water, etc., mix and stir in a high-speed shearing kettle at 1000-2000 rpm, add 23 portions of sodium silicate solution and 15 portions of potassium silicate solution while stirring at high speed, until the addition is complete and the mixed solution is in a completely transparent and uniform liquid state.

[0054]The agent A material in the present invention is a completely transparent and uniform liquid, which truly realizes nano-scale dispersion. The viscosity is all less than 5 mP·s, which is close to 1 mP·s of water. The particles are active and have excellent capillary permeability. It would contribute to the convenienc...

example 2

[0057]Preparation of agent A material: weigh 0.05 portions of dodecyl trimethyl aminochloride, 0.10 portions of sodium borate, 0.1 portions of sodium thiosulfate, 0.10 portions of ammonium chloride, 0.15 portions of potassium carbonate, 0.10 portions of sodium metaphosphate, 0.10 portions of magnesium fluoride, 0.15 portions of sodium amino alcohol, and 60 portions of deionized water, etc., mix and stir in a high-speed shearing kettle at 1000-2000 rpm, and add 20 portions of sodium silicate solution and 18 portions of potassium silicate solution while stirring at high speed, until the addition is complete and the mixed solution is in completely transparent and uniform liquid state.

[0058]After the inorganic water-based nano-modified silicate capillary crystalline repairing material agent A for protecting the water-proofing and durability of concrete prepared in this example is applied to new concrete (no obvious durability problems, such as whitening, yellowing, fine cracks, pulp pee...

example 3

[0059]Preparation of agent A: weigh 0.05 portions of dodecyl trimethyl aminochloride, 0.10 portions of sodium borate, 0.1 portions of sodium thiosulfate, 0.10 portions of ammonium chloride, 0.15 portions of potassium carbonate, 0.10 portions of sodium metaphosphate, 0.1 portions of magnesium fluoride, 0.15 portions of sodium amino alcohol, and 60 portions of deionized water, etc., mix and stir in a high-speed shearing kettle at 1000-2000 rpm, add 20 portions of sodium silicate solution and 18 portions of potassium silicate solution while continue stirring at high speed until the mixed solution is in completely transparent and uniform liquid state.

[0060]Preparation of agent B: weigh 0.13 portions of triethanolamine, 15 portions of sodium hydroxide, 60 portions of deionized water, mix and stir in a high-speed shearing kettle at 1000-2000 rpm, add 30 portions of calcium hydroxide solution while stirring at high speed until the addition is complete and the mixed solution is completely t...

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Abstract

A concrete durability protection method is provided, including following steps: Step one: rinsing the concrete surface; Step two: spraying agent A material or alternately spraying agent B material and agent A material at the wet surface of the concrete; Step three: repeating step two. The beneficial effects of the present invention include: nanoscale active silicate penetrates into the concrete surface layer within a certain depth and reacts with free calcium ions within the concrete to form C—S—H crystalline, thereby improving the compactness of the concrete surface layer within a certain depth, repairing defects in the concrete surface layer within a certain depth, such as the capillary interstices, pores, microcracks, etc., so as to effectively improve the durability of concrete. The unreacted nanoscale active silicate material has permanent activity. It could recover its activity when the concrete absorbs moisture, and continue to react with free calcium ions in the concrete to quickly form C—S—H crystals, realizing the permanent concrete durability protection.

Description

RELATED APPLICATIONS[0001]The present application is a U.S. National Phase of International Application Number PCT / CN2020 / 000090, filed Apr. 27, 2020, and claims priority of the Chinese Patent Application No. 201910146232.0, entitled “A nano-modified silicate capillary crystalline material and the use method thereof” filed on Feb. 27, 2019.TECHNICAL FIELD[0002]The invention relates to the technical field of inorganic concrete durability protection and repair materials. Particularly, it involves a nano-modified silicate capillary crystalline material and the use method thereof.TECHNICAL BACKGROUND[0003]The past 30 years have seen a rapid economic development in China, as well as rapid development of infrastructure construction and key projects in various fields, such as municipal construction projects, transportation bridges and tunnels, hydropower dam projects, port projects, etc. As the country's urbanization is largely completed, the peak period of major construction in China has ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C04B41/45C04B41/50C04B40/06C04B14/04
CPCC04B41/4543C04B41/5024C04B14/04C04B40/0683C04B40/0658C04B41/68C04B41/009C04B41/5089C04B28/26C04B2111/00155C04B2111/20C04B28/02C04B41/4578C04B41/46C04B41/5006C04B41/501C04B41/5011C04B41/5012C04B41/5014C04B41/5072C04B2103/40C04B22/062C04B22/064C04B40/0057C04B2103/10C04B2103/20C04B2103/601C04B2103/61C04B24/121
Inventor ZHAN, YANGDONGSUZUKI
Owner ZHAN YANGDONG
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